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Philip Hazel

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Philip Hazel
EducationPh.D. Applied mathematics
Alma materUniversity of Cambridge, 1970[1]
Known forExim, PCRE
Websitequercite.dx.am Edit this at Wikidata

Philip Hazel is a computer programmer best known for writing the Exim mail transport agent in 1995[2][3] and the PCRE regular expression library in 1997.[4]

He did undergraduate studies at the University of Cape Town and went to the University of Cambridge for his PhD.[5] He arrived in Cambridge in 1967[5] was employed by the University of Cambridge Computing Service until he retired at the end of September 2007. In 2009 Hazel wrote an autobiographical memoir about his computing career which he updated in 2017.[1]

Hazel is also known for his typesetting software, in particular "Philip's Music Writer",[6][7] as well as programs to turn a simple markup into a subset of DocBook XML for use in the Exim manual, and to produce PostScript from this XML.

Published works

  • Hazel, Philip (2001). Exim: the Mail Transfer Agent. O'Reilly Media. ISBN 9780596000981. OCLC 54115766.
  • Hazel, Philip (2007) [2003]. The Exim SMTP Mail Server (2 ed.). UIT Cambridge. ISBN 9780954452971. OCLC 148721785.
  • Hazel, Philip (2017) [2009]. "From Punched Cards To Flat Screens - A Technical Autobiography" (PDF) (2 ed.).


  1. ^ a b c Hazel, Philip (2017) [2009]. "From Punched Cards To Flat Screens - A Technical Autobiography" (3rd ed.). Archived from the original (PDF) on 20 June 2024.
  2. ^ Evi Nemeth; Garth Snyder; Trent R. Hein (2007). Linux administration handbook. Addison-Wesley. p. 621. ISBN 9780137002757. Retrieved 23 December 2010.
  3. ^ Gerald Carter (2003). LDAP system administration. O'Reilly Media, Inc. p. 165. Retrieved 23 December 2010.
  4. ^ Jeffrey E. F. Friedl (2006). Mastering regular expressions. O'Reilly Media, Inc. p. 440. Retrieved 23 December 2010.
  5. ^ a b Joe, Brockmeier (19 June 2024). "How free software hijacked Philip Hazel's life". LWN. Retrieved 21 June 2024.
  6. ^ "Philip's Music Writer". Retrieved 13 September 2022.
  7. ^ Le Huray, Peter (1990). Authenticity in performance: eighteenth-century case studies. Cambridge University Press Archive. p. 17. Retrieved 23 December 2010.